As usual Christian Audio has a free offering for January and this one is a good one. This month you can download J.I. Packer's Knowing God for free. I read through Knowing God a few years ago (actually 2005 according to Amazon so more than a few years ago!) and it was one of the best, most formative books I have ever read. I was thinking the other day that I need to reread it but now I can listen to it while doing something else, like blogging!